2 files changed, 6 insertions, 0 deletions
diff --git a/Userland/Libraries/LibC/stdlib.cpp b/Userland/Libraries/LibC/stdlib.cpp
index 477fe086c8..293e2ca77a 100644
--- a/Userland/Libraries/LibC/stdlib.cpp
+++ b/Userland/Libraries/LibC/stdlib.cpp
@@ -713,6 +713,11 @@ int abs(int i)
     return i < 0 ? -i : i;
 }
 
+long long int llabs(long long int i)
+{
+    return i < 0 ? -i : i;
+}
+
 long int random()
 {
     return rand();
diff --git a/Userland/Libraries/LibC/stdlib.h b/Userland/Libraries/LibC/stdlib.h
index 7732ba55ef..fc029d2ce3 100644
--- a/Userland/Libraries/LibC/stdlib.h
+++ b/Userland/Libraries/LibC/stdlib.h
@@ -49,6 +49,7 @@ char* ptsname(int fd);
 int ptsname_r(int fd, char* buffer, size_t);
 int abs(int);
 long labs(long);
+long long int llabs(long long int);
 double atof(const char*);
 int system(const char* command);
 char* mktemp(char*);